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升力体构型高超声速飞行器模态稳定性分析 被引量:6

Modal Analysis of a Liftbody Hypersonic Aircraft
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摘要 高超声速技术具有前瞻性、战略性和带动性,其发展将为航空航天技术带来革命的突破。文章针对升力体构型高超声速飞行器的模态稳定性问题,首先建立了一个升力体飞行器基本的动力学模型。通过分析状态方程、转移矩阵特征方程的特征值分布情况,得出了高超声速飞行器纵向和横侧向模态稳定性的分析结果,并和纵向、横侧向的静稳定度进行比对。其结果表明升力体高超声速飞行器的纵向模态稳定性与纵向静稳定性是一致的,而在横侧向通道则存在不稳定的情况。 We study the stability of a liftbody hypersonic aircraft in this paper. In Section 1 of the full paper, we established the model of the hypersonic aircraft and determined the transfer matrix eigenvalues distribution of the state equation. In Section 2, the longitudinal and lateral modal stability of the hypersonic aircraft was given in Tables 1 and 2. The longitudinal and lateral steady state stability was compared in Tables 3 and 4. The results show that ( 1 ) in the longitudinal channel, modal stability of the lifthody hypersonic aircraft is equivalent to its static stability when the Angle of Attack(AOA) ranges from -3° to 6°; (2) in the lateral channel, the spiral modal is unstable when the AOA ranges from -3° to 0°.
出处 《西北工业大学学报》 EI CAS CSCD 北大核心 2010年第3期327-331,共5页 Journal of Northwestern Polytechnical University
基金 国家自然科学基金(90816027) 航空科学基金(2008ZA53002)资助
关键词 升力体 高超声速 模态 静稳定性 liftbody, hypersonic aircraft, modal analysis, static stability
作者简介 陈琛(1980-),西北工业大学硕士研究生,主要从事飞行器控制与仿真技术研究。
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共引文献2

同被引文献41

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